d6
/
uxn
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

(uxn.c) Ram wrapping for LDZ

This commit is contained in:
neauoire 2023-11-01 09:35:38 -07:00
parent 7dfcd2b579
commit be438b40c6
1 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
src/uxn.c
View File

@ -50,7 +50,7 @@ uxn_eval(Uxn *u, Uint16 pc)
case 0x400: /* JMI */ rr = ram + pc; pc += PEEK2(rr) + 2; break;
case 0x600: /* JSI */ SHIFT( 2) T2_(pc + 2); rr = ram + pc; pc += PEEK2(rr) + 2; break;
case 0x800: /* LIT */ case 0xc00: SHIFT( 1) T = ram[pc++]; break;
case 0xa00: /* LIT2 */ case 0xe00: SHIFT( 2) rr = ram + pc; T2_(PEEK2(rr)) pc += 2; break;
case 0xa00: /* LIT2 */ case 0xe00: SHIFT( 2) N = ram[pc++]; T = ram[pc++]; break;
/* ALU */
case 0x01: /* INC */ t=T; SET(1, 0) T = t + 1; break;
case 0x21: /* INC2 */ t=T2; SET(2, 0) T2_(t + 1) break;
@ -83,9 +83,9 @@ uxn_eval(Uxn *u, Uint16 pc)
case 0x0f: /* STH */ t=T; SET(1,-1) FLIP SHIFT(1) T = t; break;
case 0x2f: /* STH2 */ t=T2; SET(2,-2) FLIP SHIFT(2) T2_(t) break;
case 0x10: /* LDZ */ t=T; SET(1, 0) T = ram[t]; break;
case 0x30: /* LDZ2 */ t=T; SET(1, 1) rr = ram + t; T2_(PEEK2(rr)) break;
case 0x30: /* LDZ2 */ t=T; SET(1, 1) N = ram[t++]; T = ram[t]; break;
case 0x11: /* STZ */ t=T;n=N; SET(2,-2) ram[t] = n; break;
case 0x31: /* STZ2 */ t=T;n=H2; SET(3,-3) rr = ram + t; POKE2(rr, n) break;
case 0x31: /* STZ2 */ t=T;n=H2; SET(3,-3) ram[t++] = n >> 8; ram[t] = n; break;
case 0x12: /* LDR */ t=T; SET(1, 0) T = ram[pc + (Sint8)t]; break;
case 0x32: /* LDR2 */ t=T; SET(1, 1) rr = ram + pc + (Sint8)t; T2_(PEEK2(rr)) break;
case 0x13: /* STR */ t=T;n=N; SET(2,-2) ram[pc + (Sint8)t] = n; break;